Joko Kareki, operating under his codename Noir Set, accepts a personal assignment from his father to protect a new romantic interest at her residence. Drawing on two decades of military training and advanced intelligence skills, he installs discreet monitoring systems and begins cataloging every aspect of the home. As the first day unfolds, his meticulous observations reveal the rhythms of daily life within the household. The task demands complete professionalism while he maintains constant vigilance over the woman under his watch.